-0.64% is the change from 623 to 619
Calculation steps:
[( 619 - 623 ) ÷ 623] x 100 = -0.64%
Formula
Percentage change = [(619 - 623) / 623] x 100
Subtract the new number by the original number
619 - 623 = -4
-4 ÷ 623 = -0.006420545746388443
-0.006420545746388443 x 100 = -0.64%